Drum washing machine

A drum washing machine, comprising:

• a tub;
• a drum rotatably provided in the tub;
• an agitator rotatably provided in the drum and having a water spray hole;
• a driver in transmission connection with the drum via a main shaft, and the main shaft transmitting a torque of the driver to the drum;
• a planetary gear assembly in transmission connection with the main shaft and the agitator separately and switchable between a first state and a second state, wherein in the first state, the planetary gear assembly transmits a torque of the main shaft to the agitator, to rotate the agitator and the drum in a same direction, and in the second state, the planetary gear assembly transmits the torque of the main shaft to the agitator in an opposite direction, to rotate the agitator and the drum in opposite directions;
• a brake, comprising:
• a brake disk linked with the planetary gear assembly, wherein when the brake disk is allowed to rotate freely, the planetary gear assembly is in the first state, and when the brake disk is braked, the planetary gear assembly is in the second state;
• a brake seat mounted to a rear wall of the tub and provided with a slideway;
• a brake pawl provided to the brake seat and switchable between a tightening state and a releasing state, wherein in the tightening state, the brake pawl holds the brake disk tightly to brake the brake disk, and in the releasing state, the brake pawl releases the brake disk to allow the brake disk to rotate freely;
• a brake lever slidably fitted with the slideway between an extending position and a retracting position and linked with the brake pawl, wherein the brake pawl is switched to the tightening state when the brake lever is located at the extending position, and the brake pawl is switched to the releasing state when the brake lever is located at the retracting position;
• and
• a brake driver mounted to the brake seat, in transmission connection with the brake lever, and driving the brake lever to move between the extending position and the retracting position;
• and
• a water supply device in communication with one of the tub and a water supply as well as the agitator separately, supplying water in the tub or the water supply to the agitator, and spraying the water into the drum through the water spray hole.